NAOC Open IR
LAMOST星系光谱的红移自动测量
朱光华; 罗阿理; 赵永恒
2005
Source Publication光谱学与光谱分析
ISSN1000-0593
Volume025Issue:006Pages:1002
Abstract自动测量LAMOST望远镜所产生的大量星系光谱红移,是LAMOST望远镜数据处理的关键。PCAZ的红移自动测量方法,只适用于红移值较小(一般情况不超过z<0.2)的情况,其原因是受到所应用构建正交模板的光谱模板范围的限制。文章突破了这一限制,针对LAMOST将产生的光谱的特点,作者改进了这套方法。应用该方法到具体的观测数据中,得到了准确率超过90%的红移值。该方法的红移测量极限依赖于模板的波长范围和待测光谱蓝端的信噪比,按照LAMOST的初步设计,对z<0.8红移,可进行准确测量。经过测量,得出结论:(1)该方法适用于LAMOST的星系红移测量;(2)为实现巡天红移的测量,需要构造完备的不同星系的光谱模版(UV-IR);(3)蓝端信噪比大小影响对大红移的测量。
Language英语
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/40573
Collection中国科学院国家天文台
Affiliation中国科学院国家天文台
First Author AffilicationNational Astronomical Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
朱光华,罗阿理,赵永恒. LAMOST星系光谱的红移自动测量[J]. 光谱学与光谱分析,2005,025(006):1002.
APA 朱光华,罗阿理,&赵永恒.(2005).LAMOST星系光谱的红移自动测量.光谱学与光谱分析,025(006),1002.
MLA 朱光华,et al."LAMOST星系光谱的红移自动测量".光谱学与光谱分析 025.006(2005):1002.
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